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(No Model.)

' H. H. BROWN & W. M. BOLD.

NAIL FOR BOX CORNERS.

No. 433,443. Patented Aug. 5, 1890.

NVENTORS,

BROWN ATT 55-1 W. M. BOLD 1'2. H? /M/ZZW/ as LWMXW was co, PHOTMITHm,msnmamu a c UNITED STATES PATENT OFFICE.

HENRY II. BROWN AND WILLIAM M. BOLD, OF DECATUR, ILLINOIS; SAID BOLDASSIGNOR TO SAID BROWVN.

NAIL FOR BOX-CORNERS.

SPECIFICATION forming part of Letters Patent No. 433,443, dated August5, 1890. Application filed January 3, 1890 Serial No. 336,761. (Nomodel.)

To all whom it may concern.-

Be it known that we, HENRY I-I. BROWN and WILLIAM M. BOLD, of the cityof Decatur, county of Macon, and State of Illinois, have inventedcertain new and useful Improve ments in Nails for Box-Corners, of whichthe following is a specification.

In the drawings accompanying and forming a part of this specification,Figure 1 is a perspective view of our device. Fig. 2 is an elevation orside view. Fig. 3 is an edge view, and Fig. 4 shows how the device maybe applied to a box-corner.

The blank a has on its lower edge two sets of teeth I) cand e d, thatare pitched or inclined in opposite directions and set as indicated. Italso has at its upper corners the rectangular lugs or stays a a.

In operation the device is set with one pair of teeth on one piece to bejoined and the other pair on the other piece, and is driven 01'otherwise forced into the wood. The pitch or incline of the teeth drawsthe pieces together, the set causes the teeth of each pair to divergeand dovetail in the wood, and the lugs help to prevent the pieces fromdrawing apart.

The number of teeth, size of the blank, and degree of inclination in thevarious parts may be Varied Without affecting the principle of ourinvention, which consists in the following, which we claim as new anddesire to secure by Letters Patent.

V 1. A corner-nail comprising a sheet-metal blank having two sets ofteeth inclined in opposite directions and set, as set forth.

2. A corner-nail comprising a sheet-metal blank having two sets of teethinclined in opposite directions and set, and havinglrlgs extendingrectangularly from its upper corners, as set forth.

In testimony whereof we sign our names in the presence of twosubscribing witnesses.

II. II. BROVJN. IVM. M. BOLD.

Attest L. I. GRAHAM, W. W. GRAHAM.

